Your head should be up, your back straight, and shoulders level.

你的头应该抬起来，你的背部笔直，肩膀水平。

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While sitting or standing, the back should be straight, but not tense or tight.

当作者或站着的时候，背要挺直，但是不要紧张和拘谨。

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Your walk should be easy and graceful, stand with your back tall and straight.

走路的步伐要轻松自在；站立的姿势要端正挺直。

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Also, your wrists should be kept straight and never bent back.

此外，手腕也必须打直，避免向后折。

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Also, your wrists should be kept straight and never bent back.

此外，手腕也必须打直，避免向后折。

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